Method BeginUndoAction

scintilla/src/Document.h:302–302

	}
	bool IsCollectingUndo() { return cb.IsCollectingUndo(); }
	void BeginUndoAction() { cb.BeginUndoAction(); }
	void EndUndoAction() { cb.EndUndoAction(); }
	void AddUndoAction(int token, bool mayCoalesce) { cb.AddUndoAction(token, mayCoalesce); }
	void SetSavePoint();